PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE

PURPOSE:To obtain a photosensitive planographic printing plate with high contrast and decreased remaining of colors by promoting the solubility of a photosensitive layer without decreasing the printing durability. CONSTITUTION:The roughened and anodically oxidized surface of aluminum plate colored w...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUMURO IKU, MATSUBARA SHINICHI, TOMIYASU HIROSHI, NOGUCHI KAZUO, KOYA YOSHIHIRO, KAJIWARA SHIGERU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY LINING MACHINES MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE MATERIALS THEREFOR ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM PRINTING PRINTING PLATES OR FOILS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a photosensitive planographic printing plate with high contrast and decreased remaining of colors by promoting the solubility of a photosensitive layer without decreasing the printing durability. CONSTITUTION:The roughened and anodically oxidized surface of aluminum plate colored with (1) a soln. containing a UV absorbent or (2) a soln. containing a UV absorbent and a compd. soluble or swellable with an alkali soln. so that the reflection density DS at the max. absorption wavelength in 340-450nm range is increased by 0.02-0.5 than the DS without dyeing. Then (1) a positive photosensitive compsn. layer containing an o-quinoazide compd. and inclusion compd. or (2) a positive photosensitive compsn. layer containing o-quinone diazide compd. is formed to obtain the photosensitive planographic printing plate.